Small cargo hold
From Cantr II Wiki
This is a small area below decks for cargo storage that can be built on a ship. It can accommodate three people and a few items. A soarer has room for one small cargo hold.
The hold allows most machines the require a building to be constructed aboard the vessel.
The machines that can't be built have a special category.
Also see cabins and holds for a full list of extensions buildable on ships.
Construction
Object: Small ship cabin
Days needed: 4
Raw materials needed: 5000 grams of wood
Objects: none
Tools needed: stone, bronze or regular hammer
Build/Repair Skill: Shipbuilding
Capacity
People: 3
Weight: 200000 grams